Sole-sewing machine.



J. B. HADAWAY.

SOLE. SEWING MACHINE.

I APPLIOATION FILED JAN. 11, 1908.

963,761. g Patented July 12, 1910.

minesses: H [naenfbrv W W 7 J. B. HADAWAY. SOLE SEWING MAGHINE.

APPLICATION FILED JAN.11, 1908.

Patented July 12, 1910.

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NITE STATES PATENT orricn.

JOHN B. HAIDAWAY, OF BROCKTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

soLn-snwlne MACHINE.

Specification of Letters Patent.

Patented July 12, 1910.

' the following to be a full clear, and exact ment for sole sewingmachines by which a description of the invention, such as Will enableothers skilled in the art to which it appertains to make and use thesame.

The present invention relates to an attachstitch-receiving groove orchannel may be cut in the upper surface of the welt in advance of theneedle so that the stitches which secure the outsole and Welt can besunk below the upper surface of the welt at the fore part of the shoe,and the subsequent operation of forming ornamental indentations on thewelt can be performed by an ordinary indenting Wheel Without danger ofinjuring the stitches of the seam. Welt channeling attachments of thischaracter as heretofore constructed have been provided with a chan-,neling knife which during its operation upon the sole is held in fixedposition above the surface of the Work support and the channel has beencut by the movement of the Welt against the stationary knife during thefeed of the shoe. During the feed the work is held but lightly againstthe Work support and variations in the depth of the groove cut' by thechanneling knife are therefore liable to occurlgl-1 The resistanceoffered by the stationary ife also puts additional and objectionablestrain upon the feeding devices.

It is accordingly an object of the present invention to provide a weltchannelin attachment having its parts so constructe and arranged thatthe channel may be uniformly and accurately cut, thus insuring theproper sinking of the seam below the surface of the Welt with a' minimumdepth of cut and resulting weakening of the welt.

A further object is to provide a channeling attachment by which the Weltmay be channeled without putting additional and objectionable strainupon the feeding devices.

With these objects in view one of the priniipal features of the presentinvention contemplates so operating the channeling knife that it moveswith thework during the feed and-in the opposite direction during theintervals between the feeding movements of the work. The channelingknife is preferably thus operated by mounting it upon the feed slide ofthe machine to which the attachment is applied and so arranging it thatit may be projected above the surface of the work support in advance ofand in alinement with the needle. ,lVith the knife thus mounted it willmove forwardwith the welt during the feed of the work so that it willput no strain upon the feeding devices at this time, and during thereturn stroke of the feed slide the knife will act to cut the channel inthe welt. At this time the work is held firmly clamped against the uppersurfacerof the work support so that the surface of the welt isaccurately and firmly positioned against the work support and thechannel will therefore be accurately cut to a uniform depth during eachreturn stroke of the feed slide. This manner of mounting the channelingknife also enables the knife to be rigidly supported comparatively closeto the cutting point so that there is no danger that the knife supportWill spring or yield during the cutting and cause an inaccurate formingof the channel. The cutter may also be arranged to work within the usualslot formed in the work support for the passage of the needle and awl sothat the welt is accurately supported and positioned on opposite sidesof the knife, thus contributing to the uniform action of the knife uponthe welt.

The channeling knife maybe secured on the feed slide in any suitablemanner so far as the broader aspects of theinvention are concerned. Itis preferred however, to so mount the knife, that it may be withdrawnbelow or projected above tlie'surface of the work support, and to soconnect the knife I carrier with the device for operating the gage whichis'brouglrt intonaction in sew ing about the forepart' of the shoethatthe kmfewill be projected above the work sup port. when this gage ismoved into operative" position, and will be withdrawn below theuppersurface of the work support when; this age is withdrawn. a a c The!invention will bereadily understood from an inspection of theaccompanying drawingsyin Which Figure 1 shows a front elevation of thefeed slide of a shoe sewing machine with the present intention appliedthereto; Fig. 2 is l a plan view partly in section of the'mechanismshown in Fig. 1, together with portions of .the shoe sewing machine;Fig. 3 is an .end elevation partly in section of the mechanism shown inFig. 1, looking toward the right, the awl segment being removed;.andFig. 4 is a perspectiveview of the channeling knife.

As shown inthe drawings the invention is applied to a machine such asdisclosed in my Patent No. 704,458, dated, July 8, 1902, to whichreferencemay be had for a detail description .of the constr'uction andmode of operation of the parts which are not hereinafter specificallydescribed.

The curved hook needle 1, the anal seg ment 2, the edge gage 3, the feedslide 4, the lever 5 for adjusting the feed and moving the edge gage 3into and out of position to guide the work, are all constructed, a r aned and operate in the manner fully disclosed in the patent abovereferred to. The work support (5 of the usual construction, and isprovided with a slot 7 throu h which the awl and needle work during thesewing operation, the upper surface of the work sup port on oppositesides of the slot being in the same plane, so that the welt isaccurately supported on opposite. sides of the slot.

The present invention is incorporated in the machine by mounting achanneling knife 8 upon the feed slide 4 and arranging the knife so thatit may be projected up through the slot 7 in the work support intoposition where it will act during the return move-,

ment of the feed to cut a channel in the face of the welt, the depth ofwhich will depend upon the extent to which the knife projects above theupper surface of the work support.

The channeling knife 8 is formed on the outer upturned end of a knifearm 9 which is provided with a base 10 as clearly shown in Fig. 4-. Thebase of the knife arm is secured to the upper end of a slide 11 which ismounted in suitable guideways formed in the standard 12 of the feedslide. The rear surface ofthe base 10 is recessed at 13 to receive aguiding rib formed on the upper end of the slide 11, and the knife armis adiistably sec-.u'ed to the slide by a clamping screw lt nassingthiough a slot 15 in the base of the knife arm, By meansof the clampingscrew and slot the knife may be adjusted vertically toyary the depth ofthe channel cut thereby. and when adjusted the knife arm is held tirmlyon the slide 11 by the rib engaging the recess 13. The upper end of theslide 11 is arranged back of and adjacent to the work support soIt-hatthe knife 8 may be carried on a short rigid arm 9 and may be rigidlysupported close to the point where the cutting is )erformed. The knifeis thus firmly and rigidly held during the cutting without danger of itsyielding in chattering, and with a resulting uniformity in itsactionupon the Welt. The cutter acts to cut the channel in the welt during thereturn movement of the feed slide at which time the work is firmlyclamped in position with thesurface of the well; held firmly andaccurately against the surface of the work support and supported upon.opposite sides of-the groove 7 within which the channeling cutteroperates so that the cutting of a channel of uniformdepth is insured.The channel is also out without putting any strain upon the feeding awl,since the cut is effected during the return of the feed slide and whilethe awl is out of the work.

In order that the channeling knife may be moved into and out of activeposition at the same times that the edge gage is moved into and out ofactive position, so that the channelingknife may be out of action whilesewing through'the shank and may be in action during the sewing aboutthe forepart of the shoe, the knife carrying slide it is connected withand by the lever 5 through which the edge gage is operated. Theconnections between the slide L1 and lever 5 consist of a lever 16, oneend of which engages a recess in the slide 11 and the other end of whichcarries a roll 17 engaging a cam 18 which is secured to the lever Thecam 18 is so shaped that when the lever 5 is mo\'ed to bring the edgegage 3 into action the lever 16 is operated to raise the knifecarryingslide 11 and project the channeling knife up through the slot 7 and intoposition indicated in Figs. 1 and 3. When the lever 5 is moved towithdraw the edge gage 3 from active position the cam 18 acts on thelever 16 to move the knife carrying slide 11 downward, and thus withdrawthe channeling knife 8 into a position below the upper surface of thework support.

\Vhile it is preferred to mount the channeling knife upon the feed slidein the manner shownnnddescribed. and to employ the specific constructionand arrangement of parts shown and described, it will be understood thatthis manncr of mounting and the specific construction .and arr: ngementof the parts is not essential to'the invention in its broader aspectsand may be varied as found desirabhi, and to suit the requirement of thespecific construction and arrangement ofthe parts of the machine towhich it is desired to apply the invention.

Having explained the nature and object of the invention and specificallydescribed one form of mechanism inwhich it may be embodied, what. iclaim is:

1. sole sewing machine, having, in combination with stitch'forming andwork feeding devices, a work support, a channeling knife arranged to cuta st itch-receivingchannel in the surface of the welt, and mechanisml'or moving the. knife with the work during the feed and in the oppositedirection knife arranged to 'eutk -i-a stitch-receiving substantially asdescribed.

channel in the surface 6f the welt, mechanism for moving the Qdlife withthe work during the'feeding movement of the feeding devices and in theopposite direction during the return stroke of the" feeding devices,

' 3. rtsole sewing machine, having, in coms bmat ion with stitch'forming devices a work support and feed slide, a channeling knife fmounted on the feed slide and arranged to '2 cut a stitch-receivingchannel in the surface .of the welt, substantially as described.

fl. sole sewing mac ine, having, in comb nation with stitch formingdevices, a slotted work support having supporting surfaces on oppositesides of the slot, a feed slide, a channeling knife mounted on the feedslide and arranged to cut a stitch-recelvlng channel 111 the surface oithe welt, and means for pro3ect1ng the knife up through the slot in thework support and withdrawing it below the surface of the 'WOIk support,substantially as described.

5. A sole sewing machine, having, in combination with stitch formingdevices, a work support, a feed slide, an edge guide, a channeling knifemounted on the feed slide and arranged to cut a stitch-receiving channelin the surface-of the welt, means for moving the -edge guide into andout of active position, and for projecting the channeling knife abovethe surface of V the work guide and Withdrawing it below said surface,substantially as described.

In testimony whereof I afiix my signature, in presence of two Witnesses.

JQHN n. Hanawavf Witnesses FRED U. FISH,

ANNIE C. RicrrAunsoN.

